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Scientific Highlights

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Datum
20 octobre 2022
EnF_PH

PSI researcher Patrick Hemberger honored in the Rising Stars special issue in Energy & Fuels

To celebrate contributions of highly influential early and mid-career researchers in energy research, the journal Energy & Fuels established an annual recognition of Energy and Fuels Rising Stars.

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19 octobre 2022
SPIE Fellow Manuel Guizar-Sicairos

Dr. Manuel Guizar-Sicairos elected as SPIE Fellow member

Dr. Manuel Guizar-Sicairos was elected as a 2022 SPIE Fellow Member for his contributions to coherent lensless imaging, including ptychography and X-ray nano-tomography. The distinction was awarded in the SPIE’s Optics & Photonics conference in San Diego, California.

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19 octobre 2022
Shen et al

Emergence of spinons in layered trimer iridate Ba4Ir3O10

Spinons are well-known as the elementary excitations of one-dimensional antiferromagnetic chains, but means to realize spinons in higher dimensions is the subject of intense research. Here, we use resonant x-ray scattering to study the layered trimer iridate Ba4Ir3O10, which shows no magnetic order down to 0.2 K. An emergent one-dimensional spinon continuum is observed that can be well-described by XXZ spin-1/2 chains with magnetic exchange of ∼55 meV and a small Ising-like anisotropy. With 2% isovalent Sr doping ...

 

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18 octobre 2022
Chromium tribromide has the same honeycomb geometry as graphene, but each atom on the lattice is magnetic.

Graphene’s magic in a magnet

Neutron scattering reveals rich magnetic topology in the magnetic equivalent of graphene.

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17 octobre 2022
Rahn et al

Clarifying the fate of collective metallic quantum states

Many complex metals exhibit collective states in which electrons appear to collaborate to generate novel and frequently functional behavior. These states develop when metals are cooled down to remove the effects of thermal fluctuations, enabling collective states in which electrons move coherently through the material. These collective electronic states are of tremendous importance because they are the foundation for many quantum states of interest such as unconventional superconductivity, frustrated magnetism, hidden order, as well as topologically non-trivial and electronic-nematic states.

 

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10 octobre 2022
Yin et al

Discovery of Charge Order and Corresponding Edge State in Kagome Magnet FeGe

Kagome materials often host exotic quantum phases, including spin liquids, Chern gap, charge density wave, and superconductivity. Existing scanning microscopy studies of the kagome charge order have been limited to nonkagome surface layers. Here, we tunnel into the kagome lattice of FeGe to uncover features of the charge order. Our spectroscopic imaging identifies a 2 × 2 charge order in the magnetic kagome lattice, resembling that discovered in kagome superconductors. Spin mapping across steps of unit cell height demonstrates the existence of spin-polarized electrons with an antiferromagnetic stacking order.

 

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5 octobre 2022
Magnetic measurements team

Ready for SLS2.0: First magnet series measurement completed

The first magnet series consisting of 112 quadrupole electromagnets for SLS2.0 were measured to high precision using a special home-made rotating coils measurement system. This is an important step forward for the realization of SLS2.0, the upgrade of the Swiss Light Source (SLS) at PSI, and a milestone for the members of the Magnet Section in GFA.

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4 octobre 2022
Teaser Francesca

IPW Young Investigator Award 2022

Dr. Francesca Borgna, former Marie Curie Fellow at the Center for Radiopharmaceutical Sciences awarded by the Institute of Pharmaceutical Sciences in 2022 and gave the IPW Young Scientist lecture entitled: "Combination of Terbium-161 with Somatostatin Receptor Antagonists: a Potential Paradigm Shift for the Treatment of Neuroendocrine Neoplasm.

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28 septembre 2022
Catalytic_damage_repair_cycle

Damage-Repair Cycle in Hydrocarbon Based Membranes for Fuel Cells

The development of next generation fuel cell membranes based on aromatic hydrocarbon chemistry calls for a new antioxidant strategy to tackle radical induced membrane degradation. Although damage by radicals cannot be prevented, the formed aromatic intermediates can be repaired by a suitable additive. Fuel cell experiments demonstrate that the approach is viable on the device level and that repair is a catalytic mechanism.

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26 septembre 2022
STXM images of ferrimagnetic skyrmions

Ferrimagnetic Skyrmions: fast and straight

Scientists have demonstrated, through magnetic X-ray microscopy, that magnetic skyrmions stabilized in ferrimagnetic heterostructures can be displaced by electrical currents at high velocities, and exhibit low deflection angles, proving that ferrimagnetic skyrmions are good candidates for fast skyrmionic devices.

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